Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 Rh8 win in 1 half-moves
2 Kb7 draw
3 Ra8 draw
4 Rc8 draw
5 Re8 draw
6 Rf8 draw
7 Rg6 draw
8 Rg7 draw
9 Ka8 loss in 10 half-moves
10 Kb8 loss in 10 half-moves
11 Ka6 loss in 6 half-moves
12 Kb6 loss in 6 half-moves
13 Rg5 loss in 4 half-moves
14 Rb8 loss in 2 half-moves
15 Rd8 loss in 2 half-moves
16 Rg1 loss in 2 half-moves
17 Rg2 loss in 2 half-moves
18 Rg4 loss in 2 half-moves
19 Rg3 loss in 1 half-moves